DESC:SHORT-CIRCUIT DETECTION CIRCUIT
CROSS-REFERENCE TO RELATED APPLICATIONS
The present application claims priority from Indian Provisional Patent Application No. 202221055801 filed on 28/09/2022, the entirety of which is incorporated herein by a reference. 5
TECHNICAL FIELD
The present disclosure generally relates to short-circuit detection circuits. Particularly, the present disclosure relates to a short-circuit detection circuit for a battery pack and a method of operation of a short-circuit detection circuit for a battery pack. 10
BACKGROUND
Recently, there has been a rapid development in electric vehicles because of their ability to resolve pollution-related problems and serve as a clean mode of transportation. Generally, electric vehicles include a power pack, and/or combination of electric cells for storing electricity required for the propulsion of 15 the vehicles. The electrical power stored in the power pack of the electric vehicle is supplied to the traction motor and various other electrical components for the operation of the electric vehicle.
The power pack of the electric vehicle is managed by a controller that is commonly called a battery management system (BMS). In general, battery-20 powered electric vehicles are prone to faults such as short-circuits. In case of a fault occurrence, there may be a short-circuit at the terminals of the power pack or in the electrical systems such as traction inverter, motor, etc. connected to the power pack. Such short circuits may lead to rapid heating of the battery cells as the current and/or voltage may rise steeply. Such a steep rise in the current and/or 25 voltage may increase the cell temperature to an extent that may set the power pack
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on fire. This is particularly worrisome in the case of high-capacity lithium-ion power packs, such as those used in electric vehicles.
To reduce the danger associated with short-circuits and other related abnormalities, the electrical vehicles comprise mechanisms to electrically isolate the power pack from the electrical systems of the electric vehicles, when a fault 5 occurs anywhere in the electrical systems. However, the existing solutions use a combination of sensors and microprocessors for sensing the short circuit conditions and operating a switch to isolate the power pack from the rest of the electrical system. Such systems are not robust and prone to errors. Moreover, such solutions require a substantial amount of time to identify the fault and isolate the 10 power pack leading to a lot of damage to the power pack and the connected electrical systems.
Therefore, there exists a need for a mechanism that overcomes the one or more problems associated with the existing fault detection as set forth above.
SUMMARY 15
An object of the present disclosure is to provide a short-circuit detection circuit for a battery pack.
Another object of the present disclosure is to provide a method of operation of a short-circuit detection circuit for a battery pack.
In accordance with the first aspect of the present disclosure, there is provided a 20 short-circuit detection circuit for a battery pack, the circuit comprises:
- a comparator configured to compare a sensed signal to a reference signal;
- a latching circuit comprising a latching switch, a counter, and a timer; and
- a switch connected to the battery pack, 25
wherein the switch is disengaged when the sensed signal is higher than the reference signal, and the switch is held disengaged by the latching switch when
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the sensed signal is higher than the reference signal for a predefined count within a predefined time.
The present disclosure provides a short-circuit detection circuit for a battery pack. The present disclosure provides a novel combination of a latching mechanism and switches to isolate the battery pack quickly on the occurrence of a fault. 5 Beneficially, the present disclosure provides a cost-effective solution for identifying at least one fault in the electric vehicle and isolating the battery pack. Beneficially, the provided short-circuit detection circuit improves fault protection in the battery pack of the electric vehicle. Furthermore, the disclosed short-circuit detection circuit may prevent potential damage to electrical components 10 connected to the battery pack. Furthermore, the disclosed system may increase the operational life of the battery pack and electrical components connected to the battery pack.
In accordance with the second aspect of the present disclosure, there is provided a method of operation of a short-circuit detection circuit for a battery pack, wherein 15 the method comprises:
- comparing a sensed signal to a reference signal, by a comparator;
- disengaging a switch connected to the battery pack, when the sensed signal is higher than the reference signal, and
- holding the switch disengaged, by a latching switch, when the sensed 20 signal is higher than the reference signal for a predefined count within a predefined time.
Additional aspects, advantages, features, and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments constructed in conjunction with the appended claims that 25 follow.
It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the appended claims.
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BRIEF DESCRIPTION OF DRAWINGS
The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present 5 disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein: 10
Figure 1 illustrates a block diagram of a short-circuit detection circuit for a battery pack, in accordance with an aspect of the present disclosure.
Figure 2 illustrates a flow chart of a method of operation of a short-circuit detection circuit for a battery pack, in accordance with another aspect of the present disclosure. 15
In the accompanying drawings, an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent. A non-underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non-underlined and accompanied by an associated arrow, the non-20 underlined number is used to identify a general item at which the arrow is pointing.
DETAILED DESCRIPTION
The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of 25 carrying out the present disclosure have been disclosed, those skilled in the art
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would recognize that other embodiments for carrying out or practicing the present disclosure are also possible.
The description set forth below in connection with the appended drawings is intended as a description of certain embodiments of a short-circuit detection circuit and is not intended to represent the only forms that may be developed or 5 utilized. The description sets forth the various structures and/or functions in connection with the illustrated embodiments; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of 10 particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
While the disclosure is susceptible to various modifications and alternative forms, 15 specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure. 20
The terms “comprise”, “comprises”, “comprising”, “include(s)”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, or system that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or system. In other words, one or more 25 elements in a system or apparatus preceded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
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In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings which are shown by way of illustration-specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be 5 utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
The present disclosure will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or 10 constructions are not described in detail since they would obscure the description with unnecessary detail.
As used herein, the terms “electric vehicle”, “EV”, and “EVs” are used interchangeably and refer to any vehicle having stored electrical energy, including the vehicle capable of being charged from an external electrical power source. 15 This may include vehicles having batteries that are exclusively charged from an external power source, as well as hybrid vehicles which may include batteries capable of being at least partially recharged via an external power source. Additionally, it is to be understood that the ‘electric vehicle’ as used herein includes electric two-wheelers, electric three-wheelers, electric four-wheelers, 20 electric pickup trucks, electric trucks, and so forth.
As used herein, the terms “power pack” “battery pack”, “battery”, and “power source” are used interchangeably and refer to multiple individual battery cells connected to provide a higher combined voltage or capacity than a single battery. The power pack is designed to store electrical energy and supply it as needed to 25 various devices or systems. Power pack, as referred herein may be used for various purposes such as power electric vehicles and other energy storage applications. Furthermore, the power pack may include additional circuitry, such as a battery management system (BMS), to ensure the safe and efficient charging
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and discharging of the battery cells. The power pack comprises a plurality of cell arrays which in turn comprises a plurality of battery cells.
As used herein, the term “comparator” refers to an electronic device that compares two input voltages and produces an output voltage that indicates which input voltage is greater. The comparators are used in analog circuits to detect when a 5 voltage signal has reached a certain threshold level. The comparator may have inbuilt hysteresis which is a built-in mechanism to prevent the output from oscillating when the input signal is near a threshold value.
As used herein, the term “latching circuit” refers to a circuit that stores a single bit of information and holds its value until it is updated by new input signals. The 10 latching circuit is also known as a bistable circuit because of having two stable states. The latching circuit may comprise a latching switch and other electronic components.
As used herein, the term “latching switch” refers to a switch that maintains its state after being activated. Once activated, the electronic latching switch may 15 require modified input to deactivate the switch.
As used herein, the term “filter circuit” refers to an electronic circuit that allows certain frequencies of a signal to pass through while blocking or attenuating other frequencies.
As used herein, the term “switch” refers to a switch that uses electronic 20 components to control the flow of current in a circuit. The switch may be a transistor, a MOSFET, an IGBT, a thyristor, and so forth.
As used herein, the term “counter” refers to a circuit that counts the number of times a particular event occurs.
As used herein, the term “timer” refers to a device that uses electronic 25 components to measure time.
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As used herein, the term “control unit” refers to a computing unit of the electric vehicle that controls and coordinates the operation of the vehicle's various subsystems, including the electric motor, charging system, and braking system. The control unit is responsible for optimizing the vehicle's performance, efficiency, and safety. The control unit may comprise a microprocessor. 5
As used herein, the terms “microcontroller”, “microprocessor” and “processor” are used interchangeably and refer to a computational element that is operable to respond to and process instructions that drive the system. Optionally, the microprocessor may be a micro-controller, a complex instruction set computing (CISC) microprocessor, a reduced instruction set (RISC) microprocessor, a very 10 long instruction word (VLIW) microprocessor, or any other type of processing unit. Furthermore, the term “microprocessor” may refer to one or more individual processors, processing devices, and various elements associated with a processing device that may be shared by other processing devices. Furthermore, the microprocessor may be designed to handle real-time tasks with high performance 15 and low power consumption. Furthermore, the microprocessor may comprise custom and/or proprietary processors.
As used herein, the term “communicably coupled” refers to a communicational connection between the various components of the system. The communicational connection between the various components of the system enables the exchange 20 of data between two or more components of the system.
Figure 1, in accordance with an embodiment, describes a short-circuit detection circuit 100 for a battery pack. The circuit 100 comprises a comparator 102, a latching circuit 104, and a switch 106 connected to the battery pack. The comparator 102 is configured to compare a sensed signal to a reference signal. 25 The latching circuit 104 comprises a latching switch 104a, a counter 104b, and a timer 104c. The switch 106 is disengaged when the sensed signal is higher than the reference signal, and the switch 106 is held disengaged by the latching switch
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104a when the sensed signal is higher than the reference signal for a predefined count within a predefined time.
The short-circuit detection circuit 100 for a battery pack of an electric vehicle is advantageous in terms of identifying at least one fault (short-circuit) and isolating the battery pack from other electrical components of the electric vehicle. 5 Beneficially, the short-circuit detection circuit 100 provides a simple and effective solution for identifying at least one fault (short-circuit) and isolating the battery pack from the other electrical components of the electric vehicle. Beneficially, the short-circuit detection circuit 100 eliminates the need for an additional microcontroller, thus reducing the cost of the overall system. Beneficially, the 10 short-circuit detection circuit 100 is robust. Beneficially, the short-circuit detection circuit 100 quickly identifies the occurred fault and prevents the electrical components from damage. Beneficially, the short-circuit detection circuit 100 is an analog circuit, thus, fast to react. Beneficially, the short-circuit detection circuit 100 is not susceptible to noise, thus, preventing false detection. 15 Beneficially, the short-circuit detection circuit 100 is easy to implement. Beneficially, the short-circuit detection circuit 100 utilizes dedicated integrated circuits and hardware increasing the robustness of the circuit 100.
In an embodiment, the comparator 102 is an integrated circuit with inbuilt hysteresis. It is to be understood that the comparator 102 is designed to compare 20 sensed signals to reference signals. Beneficially, the inbuilt hysteresis in the comparator helps to overcome minor noise in the sensed signal. Beneficially, the inbuilt hysteresis in the comparator 102 prevents change in the output of the comparator due to minor deviations in the input signal (sensed signal).
In an embodiment, the reference signal is a reference voltage and/or reference 25 current. It is to be understood that the reference voltage and the reference current are defined based on a plurality of factors, such as peak threshold parameters, thermal design of components, and so forth. Beneficially, the circuit 100 may
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utilize voltage, current, or a combination thereof to identify short-circuit faults in a robust and effective manner.
In an embodiment, the sensed signal is a voltage and/or current, measured by a sensor. It is to be understood that the voltage is measured by a voltage sensor. Similarly, it is to be understood that the current is measured by a current sensor. 5 Beneficially, the voltage sensor and/or the current sensor provide the sensed voltage and/or current respectively to the comparator 102 in a real-time manner.
In an embodiment, the circuit 100 comprises a filter circuit 108 configured to filter noise at input of the comparator 102. Beneficially, the filter circuit 108 filters high-frequency noise in the sensed signal at the input of the comparator 102 10 to prevent any false detection.
In an embodiment, the counter 104b is configured to count number of instances when the sensed signal is higher than the reference signal. It is to be understood that when the sensed signal is higher than the reference signal for the first instance, the counter 104b is activated and starts counting such future instances. 15
In an embodiment, the timer 104c is activated to measure time from first instance when the sensed signal is higher than the reference signal disengaging the switch 106 connected to the battery pack. It is to be understood that when the sensed signal is higher than the reference signal for the first instance, timer 104c is activated and starts measuring time from the first instance. 20
It is to be understood that when the sensed signal is higher than the reference signal for a predefined count within a predefined time, the latching switch 104a is activated that holds the switch 106 disengaged. In an embodiment, the predefined count may be three instances. Alternatively, the predefined count may be any suitable number of instances according to the design of the components of the 25 circuit 100. In an embodiment, the predefined time may be one minute. Alternatively, the predefined time may be any suitable duration of time according to the design of the components of the circuit 100.
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In an embodiment, the circuit 100 is connected to a control unit 110 configured to send a reset signal to the latching circuit 104. Beneficially, the control unit 110 may send the reset signal to the latching switch 104a to reset the latching switch 104a for re-engagement of the switch 106. Alternatively, the control unit 110 may send the reset signal to the counter 104b to reset the latching switch 104a for re-5 engagement of the switch 106. It is to be understood that the reset signal sent to the latching circuit 104 may reset the latching switch 104a, the counter 104b, and the timer 104c. It is to be understood that the control unit 110 comprises a microprocessor to perform computing tasks. Furthermore, the control unit 110 may comprise a memory unit. 10
In an embodiment, the reset signal is generated by the control unit 110 based on at least one of: a user input, a fault clearance condition, and/or a time duration. In a specific embodiment, a user may provide the user input to the control unit 110 once the short-circuit condition is resolved, to generate the reset signal. In an alternative specific embodiment, the control unit 110 may generate the reset signal 15 by detecting the fault clearance condition based on a diagnostic of the electric vehicle. In yet another alternative specific embodiment, the control unit 110 may generate the reset signal after a certain time duration.
In an embodiment, when the reset signal is received from the control unit 110, the latching circuit 104 is reset and the switch 106 connected to the battery pack is 20 engaged. Beneficially, the reset signal re-engages the switch 106 connected to the battery pack resulting in restarting the power supply from the battery pack to the electrical components of the electric vehicle.
In an embodiment, the circuit 100 comprises the comparator 102, the latching circuit 104, and the switch 106 connected to the battery pack. The comparator 102 25 is configured to compare the sensed signal to the reference signal. The latching circuit 104 comprises the latching switch 104a, the counter 104b, and the timer 104c. The switch 106 is disengaged when the sensed signal is higher than the reference signal, and the switch 106 is held disengaged by the latching switch
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104a when the sensed signal is higher than the reference signal for the predefined count within the predefined time. Furthermore, the comparator 102 is the integrated circuit with inbuilt hysteresis. Furthermore, the reference signal is the reference voltage and/or reference current. Furthermore, the sensed signal is the voltage and/or current, measured by the sensor. Furthermore, the circuit 100 5 comprises the filter circuit 108 configured to filter noise at input of the comparator 102. Furthermore, the counter 104b is configured to count number of instances when the sensed signal is higher than the reference signal. Furthermore, the timer 104c is activated to measure time from first instance when the sensed signal is higher than the reference signal disengaging the switch 106 connected to 10 the battery pack. Furthermore, the circuit 100 is connected to the control unit 110 configured to send the reset signal to the latching circuit 104. Furthermore, the reset signal is generated by the control unit 110 based on at least one of: the user input, the fault clearance condition, and/or the time duration. Furthermore, when the reset signal is received from the control unit 110, the latching circuit 104 is 15 reset and the switch 106 connected to the battery pack is engaged.
In an exemplary embodiment, during the normal operation of the battery pack and the electric vehicle, the comparator 102 would be continuously receiving the sensed signal (voltage and/or current) as measured by the appropriate sensor. The sensed signal would be lower than the reference signal indicating normal 20 operation of the battery pack and the electric vehicle. As soon as a short-circuit fault occurs, the sensed signal becomes higher than the reference signal. The comparator 102 would detect that the sensed signal has become higher than the reference signal and would output an instruction signal for the latching circuit 104 and the switch 106. The timer 104c and the counter 104b activate upon receiving 25 the instruction signal. The timer starts measuring the time and the counter starts counting the instances when the sensed signal would become higher than the reference signal. The switch 106 is disengaged to disconnect the battery pack when the sensed signal is higher than the reference signal. As soon as the switch 106 is disengaged, the sensed signal become lower than the reference signal 30
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leading to re-engagement of the switch 106. The above-described process repeats to disengage the switch 106 for disconnecting the battery pack. The switch 106 is held disengaged by the latching switch 104a when the sensed signal is higher than the reference signal for a predefined count within a predefined time. In an example, the predefined count may be three instances and the predefined time 5 may be one minute. Beneficially, the short-circuit detection circuit 100 detects the short-circuit and disengages the switch 106 within a few microseconds.
Figure 2, describes a method 200 of operation of a short-circuit detection circuit 100 for a battery pack. The method 200 starts at step 202 and completes at step 206. At step 202, the method 200 comprises comparing a sensed signal to a 10 reference signal, by a comparator 102. At step 204, the method 200 comprises disengaging a switch 106 connected to the battery pack, when the sensed signal is higher than the reference signal. At step 206, the method 200 comprises holding the switch 106 disengaged, by a latching switch 104a, when the sensed signal is higher than the reference signal for a predefined count within a predefined time. 15
In an embodiment, the method 200 comprises filtering noise at input of the comparator 102, by a filtering circuit 108.
In an embodiment, the method 200 comprises counting number of instances when the sensed signal is higher than the reference signal, by a counter 104b.
In an embodiment, the method 200 comprises activating a timer 104c to measure 20 time from first instance when the sensed signal is higher than the reference signal disengaging the switch 106 connected to the battery pack.
In an embodiment, the method 200 comprises generating a reset signal, by a control unit 110, based on at least one of: a user input, a fault clearance condition, and/or a time duration. 25
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In an embodiment, the method 200 comprises resetting a latching circuit 104 and engaging the switch 106 connected to the battery pack, on receiving the reset signal.
In an embodiment, the method 200 comprises comparing a sensed signal to a reference signal, by a comparator 102. Furthermore, the method 200 comprises 5 disengaging a switch 106 connected to the battery pack, when the sensed signal is higher than a reference signal. Furthermore, the method 200 comprises holding the switch 106 disengaged, by a latching switch 104a, when the sensed signal is higher than the reference signal for a predefined count within a predefined time. Furthermore, the method 200 comprises filtering noise at input of the comparator 10 102, by a filtering circuit 108. Furthermore, the method 200 comprises counting number of instances when the sensed signal is higher than the reference signal, by a counter 104b. Furthermore, the method 200 comprises activating a timer 104c to measure time from first instance when the sensed signal is higher than the reference signal disengaging the switch 106 connected to the battery pack. 15 Furthermore, the method 200 comprises generating a reset signal, by a control unit 110, based on at least one of: a user input, a fault clearance condition, and/or a time duration. Furthermore, the method 200 comprises resetting a latching circuit 104 and engaging the switch 106 connected to the battery pack, on receiving the reset signal. 20
It would be appreciated that all the explanations and embodiments of the system 100 also apply mutatis-mutandis to the method 200.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms “disposed”, “mounted,” and “connected” are to be construed broadly, and may for example be fixedly 25 connected, detachably connected, or integrally connected, either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. 30
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Modifications to embodiments and combinations of different embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”, “have”, and “is” used to describe and claim the present disclosure are intended to be construed in a 5 non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural where appropriate.
Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other 10 modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the present disclosure, the drawings, and the appended claims. In 15 addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art. ,CLAIMS:WE CLAIM:
1. A short-circuit detection circuit (100) for a battery pack, the circuit (100) comprising:
- a comparator (102) configured to compare a sensed signal to a reference signal; 5
- a latching circuit (104) comprising a latching switch (104a), a counter (104b), and a timer (104c); and
- a switch (106) connected to the battery pack,
wherein the switch (106) is disengaged when the sensed signal is higher than the reference signal, and the switch (106) is held disengaged by the latching switch 10 (104a) when the sensed signal is higher than the reference signal for a predefined count within a predefined time.
2. The circuit (100) as claimed in claim 1, wherein the comparator (102) is an integrated circuit with inbuilt hysteresis.
3. The circuit (100) as claimed in claim 1, wherein the reference signal is a 15 reference voltage and/or reference current.
4. The circuit (100) as claimed in claim 1, wherein the sensed signal is a voltage and/or current, measured by a sensor.
5. The circuit (100) as claimed in claim 1, wherein the circuit (100) comprises a filter circuit (108) configured to filter noise at input of the comparator 20 (102).
6. The circuit (100) as claimed in claim 1, wherein the counter (104b) is configured to count number of instances when the sensed signal is higher than the reference signal.
7. The circuit (100) as claimed in claim 1, wherein the timer (104c) is 25 activated to measure time from first instance when the sensed signal is higher than the reference signal disengaging the switch (106) connected to the battery pack.
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8. The circuit (100) as claimed in claim 1, wherein the circuit (100) is connected to a control unit (110) configured to send a reset signal to the latching circuit (104).
9. The circuit (100) as claimed in claim 8, wherein the reset signal is generated by the control unit (110) based on at least one of: a user input, a fault 5 clearance condition, and/or a time duration.
10. The circuit (100) as claimed in claim 1, wherein when the reset signal is received from the control unit (110), the latching circuit (104) is reset and the switch (106) connected to the battery pack is engaged.
11. A method (200) of operation of a short-circuit detection circuit (100) for a 10 battery pack, wherein the method (200) comprises:
- comparing a sensed signal to a reference signal, by a comparator (102);
- disengaging a switch (106) connected to the battery pack, when the sensed signal is higher than the reference signal, and
- holding the switch (106) disengaged, by a latching switch (104a), when 15 the sensed signal is higher than the reference signal for a predefined count within a predefined time.
12. The method (200) as claimed in claim 11, wherein the method (200) comprises filtering noise at input of the comparator (102), by a filtering circuit (108). 20
13. The method (200) as claimed in claim 11, wherein the method (200) comprises counting number of instances when the sensed signal is higher than the reference signal, by a counter (104b).
14. The method (200) as claimed in claim 11, wherein the method (200) comprises activating a timer (104c) to measure time from first instance when the 25 sensed signal is higher than the reference signal disengaging the switch (106) connected to the battery pack.
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15. The method (200) as claimed in claim 11, wherein the method (200) comprises generating a reset signal, by a control unit (110), based on at least one of: a user input, a fault clearance condition, and/or a time duration.
16. The method (200) as claimed in claim 11, wherein the method (200) comprises resetting a latching circuit (104) and engaging the switch (106) 5 connected to the battery pack, on receiving the reset signal.